CompuServe Thread

#axp face normals

3 messages in this thread
#68191From: Don HansonNov 24, 1993 5:59 PM
Does anyone know what would make the faces from an axp appear reversed? Surface\Normals\ObjectFlip/Unify has no effect (nor should it I think:) ) Using EXP_PUT_FACE etc., everything works fine. Using EXP_PUT_FDATA we should up with the faces reversed. We know we've done something wrong b/c the demos work fine. There were some changes in exprtn.h, mostly to type uchar. We did not notice until now and are focusing our efforts on testing our type casting etc. Any hints/areas-to-check/etc. would be gratefully appreciated.
#68250From: Martin EnthedNov 25, 1993 1:50 AM
<<Does anyone know what would make the faces from an axp appear reversed?>> Have you checked that you have created the faces in the right direction ? They should be created CCW to get the normal towards you
#68439From: Don HansonNov 26, 1993 4:07 PM
Thanks for the suggestion. It turns out the culprit was a leading space in one of our bitwise assignments. 🙂 <-red face